Pin Details of IC TBA920

Pin Details of IC TBA920

Substitute : CA920 ,1034

Functions :

  1. Horizontal Oscillator
  2. Sync separator
  3. AFC (Automatic Frequency Control)

Pin

No.

Function
Voltage
1.
POSITIVE (+Ve) supply voltage
12
2.
15625Hz.frequency output to horizontal driver section
4.2
3.
Pulse shaper and phase shifter
2.4
4.
Phase discriminator
2.4
5.
Flyback (blanking)pulse input (15625Hz.)from EHT
-0.2
6.
Horizontal sync input (phase discriminator)(15625Hz.)
0
7.
Separated sync output
1 to 7
8.
Composite video signal input
0.2
9.
Noise gating
0
10.
Coincidence detector
2.6
11.
Time constant switching
3.2
12.
Control voltage limiter
-1.4
13.
Horizontal oscillator (reference voltage)(15625Hz.)
7.5
14.
Horizontal oscillator (15625Hz.generation)
7
15.
Horizontal oscillator (15625Hz)control (H-Hold)
3
16.
Ground (-Ve terminal)
0

Note:

1. if top shifting occurs when VCR is connected .

2.Please use styroflex capasitor only (10 Kpf)at Pin No.14.



 
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